SQLZOO:More JOIN operations

2.Give year of ‘Citizen Kane’.

select yr
FROM movie
WHERE title='Citizen Kane';

3.List all of the Star Trek movies, include the id, title and yr (all of these movies include the words Star Trek in the title). Order results by year.

select id,title,yr
from movie
where title like '%Star Trek%'
order by yr;

4.What id number does the actor ‘Glenn Close’ have?

select id
from actor
where name='Glenn Close';

5.What is the id of the film ‘Casablanca’

select id
from movie
where title='Casablanca';

6.Obtain the cast list for ‘Casablanca’.

what is a cast list?
The cast list is the names of the actors who were in the movie.
Use movieid=11768, (or whatever value you got from the previous question)

select name
from actor join (movie join casting on id=movieid)
on actor.id=actorid
where title='Casablanca';

7.Obtain the cast list for the film ‘Alien’

select name
from actor join (movie join casting on id=movieid)
on actor.id=actorid
where title='Alien';

8.List the films in which ‘Harrison Ford’ has appeared

select title
from actor join (movie join casting on id=movieid)
on actor.id=actorid
where name='Harrison Ford';

9.List the films where ‘Harrison Ford’ has appeared - but not in the starring role. [Note: the ord field of casting gives the position of the actor. If ord=1 then this actor is in the starring role]

select title
from actor join (movie join casting on id=movieid) on actor.id=actorid
where name='Harrison Ford' and ord<>1
group by title;

10.List the films together with the leading star for all 1962 films.

select title,name
from actor join (movie join casting on id=movieid) on actor.id=actorid
where yr=1962 and ord=1;

11.Which were the busiest years for ‘Rock Hudson’, show the year and the number of movies he made each year for any year in which he made more than 2 movies.

SELECT yr,count(yr)
from actor join (movie join casting
on id=movieid)
on actor.id=actorid
where name='Rock Hudson'
group by yr
having count(yr)>2;

12.List the film title and the leading actor for all of the films ‘Julie Andrews’ played in.

Did you get “Little Miss Marker twice”?
Julie Andrews starred in the 1980 remake of Little Miss Marker and not the original(1934).

Title is not a unique field, create a table of IDs in your subquery

select title,name
from actor join (movie join casting
on id=movieid)
on actor.id=actorid
where movieid in (select movieid
from actor join (movie join casting on id=movieid)
on actor.id=actorid
where name='Julie Andrews')
and ord=1

13.Obtain a list, in alphabetical order, of actors who’ve had at least 15 starring roles.

select name
from actor join (movie join casting
on id=movieid)
on actor.id=actorid
where ord=1
group by name
having count(name)>=15;

• 注意count语句的位置

14.List the films released in the year 1978 ordered by the number of actors in the cast, then by title.

select title,count(actorid) as num_actor
from actor join (movie join casting
on id=movieid)
on actor.id=actorid
where yr=1978
group by title
order by num_actor desc,title;

15.List all the people who have worked with ‘Art Garfunkel’.

select name
from actor join (movie join casting
on id=movieid)
on actor.id=actorid
where movieid in (select movieid
from actor join (movie join casting
on id=movieid)
on actor.id=actorid
where name='Art Garfunkel')
and name<>'Art Garfunkel';